An analytic study on flooding heat transport limitation for a PFC two-phase closed thermosyphon

The present study was conducted to determine flooding heat transfer limitation of a two-phase closed thermosyphon using PFC as working fluid. The variables such as pipe inner diameter, working fluid property, operating temperature were examined by way of analytic method. Comparison of experimental data on flooding heat transfer limitation shows a fairly good agreement with the analytic results. An expression for flooding maximum heat transfer rate was formulated as a function of Bond number and saturation pressure and written as follows ; Qmax = 0.989 · Ps0.286 · Bo1.74